Hydraulic-pressure accumulator or regulator



2 Sheets-Sheet 1 (No Model.)

w. w S'UTCLIPFE. HYDRAULIC PRBSSURE AGGUMULATOR 0R REGULATOR. No. 477,468.

Patented June 21, 1892.

(No Model.) 2 Sheets-Sheet 2* W. W. SUTGLIPFE. HYDRAULIG' PRESSURE AGGUMULATOR 0R REGULATOR.

No. 477,468. Patented June 21, 1892.

UNITED STATES PATENT OFFICE.

WVILLIAM WVILSON SUTCLIFFE, OF NEYV ORLEANS, LOUISIANA.

HYDRAULIC-PRESSURE ACCUMULATOR OR REGULATOR.

SPECIFICATION forming part of Letters Patent No. 477,468, dated June 21, 1892.

I Application filed April 28, 1891. Serial No. 390,879. (No model.)

To all whom it may concern: section of relief-valve. Fig. is a plan View Be it known that I, WVILLIAM WILSON SUT- showing the lower guideways, auxiliary pump, OLIFFE, of New Orleans,in the parish of Orand hydraulic-ram connections. Fig. 6 is a leans and State of Louisiana, have invented View of the lower guide-rod plate.

5 certain new and useful Improvements in Hy- My invention is illustrated in the accompadranlic-Pressure Accumulators or Regulators; nying drawings in connection with a cane-mill and I do hereby declare the following to be a provided with three rollers A A A arranged full, clear, and exact description of the invenin triangular relation to each other, the roller tion, such as will enable others skilled in the A being arranged above and between the roll 10 art to which it appertains to make and use ers A A said rollers being supported by housthe same. ings B in the usual manner. The upper roller My invention relates to an improvement in A is provided with vertically-movable bearhydraulic-pressure accumulators or regulaing blocks or caps 0, held in place upon the o5 tors, the object being to provide means for upper side of the bearings at opposite ends of I 5 automatically relieving the accumulator at the roller and connectedby bolts D D, arany desired point, andespecially from the ex ranged vertically and extending below the terior. bed-plate E of the frame or housing. The

Afurther object is to provide positive bearbolts D D are connected at their lower ends ings for the guide-rods, so as to obviate all by a cross-head F with a cylindrical plunger 20 possibility of spring of the parts, or of their G,.adapted to fit in an opening in the head H getting out of level. of a hydraulic cylinder H, and a packing h A further object is to so construct the ac- 'eifectually prevents leakage or escape of the .cumulator and regulator thata small number liquid from said cylinder. The cylinder H 7 5 of joints will be employed, whereby the ha is of sufficient capacity to hold the quantity 2 5 bility of leakage will be diminished. of liquid required to give the desired area of A further object is to construct an accumupiston-surface and length of movement to the lator in such manner that the plunger shall plunger to suit the pressure to which the roller be maintained at all times in perfect alignis subjected andthe distance it is to be sepment, and thus prevent unduewearing of the arated from the other rollers. A pipe I, of

0 parts and consequent leakage. much smaller area than that of the cylinder A further object is to produce a hydraulic H, connects said cylinder with an accumuaccumulator which shall be of simple conlater-cylinder J the connect-ion J of said pipe struction, dispensing with allunnecessary fix- I with the cylinder J being provided with hy- 8 5 tures forguiding the plunger and connecting draulie packing J In the top of the cylin- 5 the accumulator with the hydraulic cylinder, der'J a screw-threaded opening is made for thereby simplifying and cheapening the conthe accommodation of a similarly-threaded struction and increasing its durability and efpacking-nut K, having a perforation K in its fectiveness. center, through which a plunger L is adapted 00 A further object is to so construct a hyto pass, hydraulic packing M being located 1,0 draulic accumulator that the plunger may be in the opening in the top of the cylinderand weighted both above and below. beneath the nut K. The plunger L is prefer- WVith these objects in View the invention ably extended somewhat and provided in consists in certain novel features of construcproximity to its upper end with a serewtion and combinations and arrangements of threaded portion L" for the reception of a 5 parts, as hereinafter set forth, and pointed out screw-threaded boss of a guide-head M. At

in the claims. or near the ends of the guide-head M perfo- In the accompanying drawings, Figure l is rations 'i are made, as shown in Fig. 3', through anelevation of my improved hydraulic acwhich guide-rods N are passed and secured 10o cumulator in connection with a cane-mi1l. by means of nuts 2''. The guide-rods N ex- 50 Fig. 2 is an enlarged sectional view of theactend downwardly from the guide-head M and cumulator-cylin'der. Fig. 3 is a detail View pass loosely through perforated ears or lugs, 0f the upper guide-head. .Fig.4isacletail in j, projecting from the cylinder J at the top and bottom thereof. These form positive bearings, which are necessary in order to obviate all possibility of springing of the parts or of the machine getting out of level or perpendicular position. At their lower ends these guide-rods are connected by a plate or bar 70, on which a weight or series of weights 0 are placed, and projecting downwardly from the plate or bar is a hook Z, to which a compensating-weight-such as a chain may be attached. The stem m (which is merely an extension of the plunger-rod, as previously stated) is provided with a disk or plate a, having a perforation and adapted to screw upon said stem just above the boss of guide-head M. 011 this disk or plate at, and encircling the stem m, a series of weights 0 may be placed, and in the upper extremity of the plate a hook Z may be secured.

In proximity to the top of the cylinder J an inlet cook or valve is located, whereby to charge the cylinder, and at the bottom of said cylinder an outlet cock 1 is located, by means of which the contents of the cylinder may be emptied when desired. Secured to the exterior of the cylinder J and adapted to communicate therewith is a pump P, by means of which liquid may be forced into the cylinder J from any convenient source to compensate for any leakage which might occur.

Provision is made for automatically relieving pressure upon the accumulator-cylinder when necessity demands it. This consists of a valve 01;, located in one side of the cylinder and extending into the interior of the cylinder. The stem of this valve is provided on its outer end with a head 2, preferably rounded or convex. This head extends out normally in close proximity to one of the guiderods, and on the guide-rod is mounted an adjustable sleeve '20. This sleeve is doublecone shaped, preferably, and held in place by set screw 1 or other similar means, so that when the guide-rods rise to a certain height this sleeve, by its contact against the valve-stem, forces the latter inward, thus opening the valve, so as to relieve the cylinder of pressure which might otherwise be too great and cause the cylinder to burst. Hence the sleeve may be placed at any convenient place on the guide-rod, accordingto the stage in the operation when it it is most desirable to relieve the pressure upon the cylinder. As soon as the pressure is thus relieved the guide-rods, of course, drop from their own weight and the valve is again closed by virtue of the pressure from within.

\Vith the apparatus thus constructed, arranged, and connected with the rolling-mill, should the center roll be caused to rise, due to irregularity in the quantity of material be ing passed through the mill, the bolts or rods D D will also rise, carrying with them the plate or bar F and the plunger G, whereupon liquid will be forced through the connectingpipe I into the accumulator-cylinder and displace the plunger. If suflicient pressure is reached, the sleeve strikes the valve and the pressure is relieved. After the irregularity has passed out of the mill the weight 0 0 will cause the accumulator plunger to be forced down and displace the liquid which has been forced through the connecting-pipe I back from whence it came, and so the work of regulation will be accomplished.

.By constructing the accumulator as above set forth it will be seen that the plunger of the accumulator-cylinder will be always maintained in a vertical position and in exact alignment with the bore of the cylinder and that as there are a small number of connections and wearing parts the amount of leakage and friction will be reduced to a minimum.

I am aware that pressure-regulators have been constructed in which the guide --rods were permanently fixed and a cross-head was arranged to operate on them. In my present invention the guide-rods are movable and answer the double purpose of regulating and guiding at once.

Slight changes might be made in the details of construction of my invention. For ins stance, various forms of valve could be employed other than that shown. A lever-valve could be used, or the stem could have a lever attached to it. I

Having fully described my invention, what I I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a hydraulic cyl inder having a relief-valve therein, of a plun- Zger, a weighted guide-rod connected to said plunger, and means on said guide-rod for op crating the relief-valve, substantially as set forth.

' 2. The combination, with a hydraulic cyl-' inder, piston, and relief-valve in the cylinder,

1 of guide-rod carried by the piston and a sleeve adj ustably secured on the rod for operating the relief-valve, substantially as set forth.

The combination, with a cylinder having guides formed at opposite ends, a piston or plunger, and a relief-valve located between the guides and in alignment with two of said guides, of guide-rods carried by the piston or plunger and passing through the guides, and

means on one of the rods for operating the valve, substantially as set forth.

4. The combination, with a hydraulic cylinder and plunger, of a relief-valve in the cylinder communicating with the interior and operated from the exterior by the displacement of the piston within the cylinder, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscrib- 111g witnesses.

'l/VILLIAM \VILSON SUTCLIFFE. 

